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An amoeba gets its nutrients through phagocytosis, a process where it engulfs food particles by surrounding them with its cell membrane, forming a food vacuole. Digestive enzymes are released into the food vacuole to break down the nutrients into smaller molecules that can be absorbed by the cell.
Heterotrophs are organisms which cannot make their own organic substances (eg carbohydrates, proteins etc) and so have to obtain them ready-made by eating food.
Autotrophs are organisms which can make their own organic substances from inorganic materials eg water and carbon dioxide. Plants are autotrophs.
Amoeba proteus is a free-living heterotroph, which feeds on other microscopic organisms such as ciliates and algae. These are ingested (taken into the cell) by pseudopodia, or "false feet". These are extensions of the cytoplasm which surround the prey and trap it in a tiny drop of water, forming a food vacuole. Enzymes are then added to the vaculoe to digestthe food. Useful substances are absorbed into the cell while indigestible materials are passed out.
For a very interesting article about Amoeba, with excellent photographs, see:
http://www.microscopy-uk.org.uk/mag/artsep01/amoeba.html
I think this is what your asking for;
1. What is Chlamydomonas?
Chlamydomonas reinhardtii is a unicellular green alga.
Chlamydomonas swims with two flagella, and has chloroplasts for photosynthesis.
Chlamydomonas has nothing to do with Chlamydia, by the way.
Source:
http://www.yale.edu/rosenbaum/green_yeast.html
Chlamydomonas is a single celled aquatic alga . It possess chloroplast and chlorophyll, it prepares its food by photosynthesis .
Amoeba obtains food by phagocytosis while Chlamydomonas is photsynthetic and prepares its own food from carbon dioxide and water .
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How does movement of paramecium compare to that of amoeba?
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How does osmosis and diffusion help an amoeba survive?
Osmosis and diffusion help an amoeba survive by allowing it to take in essential nutrients and water from its environment and release waste products. Through these processes, the amoeba is able to maintain the necessary balance of molecules and ions inside its cell to support its biological functions.
How does Amoeba eat's?
Amoebas engulf their food by surrounding it with their cell membrane to form a food vacuole. Then, they release digestive enzymes into the vacuole to break down the food into nutrients that can be absorbed by the amoeba's cell. Once the nutrients are absorbed, the remaining waste is expelled from the cell.
Does an amoeba have a heart?
No, an amoeba does not have a heart. Amoebas are single-celled organisms that do not possess a circulatory system like more complex organisms. They rely on diffusion to transport nutrients and gases within their cell membrane.
What is the function of a digestive vacuole in amoeba?
A digestive vacuole in an amoeba functions to break down and digest food particles that have been engulfed by the cell. This process helps the amoeba obtain nutrients for energy and growth. Once digestion is complete, waste material is expelled from the cell.
How does movement of paramecium compare to that of amoeba?
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How does the amoeba accomplish growth and development?
Amoebas eat bacteria and microscopic protozoa for their nutrients. The materials obtained help the amoeba grow, and binary fission lets the amoeba reproduce.
How does osmosis and diffusion help an amoeba survive?
Osmosis and diffusion help an amoeba survive by allowing it to take in essential nutrients and water from its environment and release waste products. Through these processes, the amoeba is able to maintain the necessary balance of molecules and ions inside its cell to support its biological functions.
How does Amoeba eat's?
Amoebas engulf their food by surrounding it with their cell membrane to form a food vacuole. Then, they release digestive enzymes into the vacuole to break down the food into nutrients that can be absorbed by the amoeba's cell. Once the nutrients are absorbed, the remaining waste is expelled from the cell.
What organism is single celled without a nucleus lives in a pond and makes its own food and nutrients?
amoeba
Does an amoeba have a heart?
No, an amoeba does not have a heart. Amoebas are single-celled organisms that do not possess a circulatory system like more complex organisms. They rely on diffusion to transport nutrients and gases within their cell membrane.
What is the function of a digestive vacuole in amoeba?
A digestive vacuole in an amoeba functions to break down and digest food particles that have been engulfed by the cell. This process helps the amoeba obtain nutrients for energy and growth. Once digestion is complete, waste material is expelled from the cell.
How does a amoeba gather food?
An amoeba gathers food through a process called phagocytosis, where it surrounds and engulfs its food, such as bacteria or algae, with its cell membrane to form a food vacuole. Enzymes are then released into the vacuole to digest the food, allowing the amoeba to absorb the nutrients.
In an amoeba a small cavity within the cytoplasm that stores food is called?
In an amoeba, the small cavity within the cytoplasm that stores food is called a food vacuole. This structure is formed when the amoeba engulfs a food particle through the process of phagocytosis, and the food vacuole serves to digest and break down the food for nutrients.
What is the difference between yeast and amoeba?
Yeast is a single-celled fungus that reproduces through budding, while amoeba is a single-celled organism that moves by forming pseudopods. Yeast is a eukaryotic organism, while amoeba can be either a eukaryote or a prokaryote. Yeast primarily obtains nutrients through fermentation, while amoeba feeds by engulfing particles through phagocytosis.
Are produced in the resting stage of an amoeba and aid in survival during harsh conditions?
Cysts are produced in the resting stage of an amoeba. They are thick-walled structures that protect the amoeba from harsh environmental conditions like drought or lack of nutrients. Cysts allow the amoeba to hibernate until conditions become more favorable for growth and reproduction.
How is digestion in amoeba different from human?
Digestion in amoeba occurs intracellularly within its food vacuoles, where enzymes break down food particles. In contrast, human digestion is extracellular and occurs in the gastrointestinal tract with the help of specialized digestive enzymes. Amoeba absorbs nutrients directly across its cell membrane, while humans absorb nutrients through the lining of the small intestine.
